Via @Architonic, three lights-cum-vases, "differently-sized clear glass lamps composed from an archetypal pendant lampshade surrounded by a cylinder, which can be filled with water and decorated with water plants or cut flowers."

"The warmth of the halogen bulb supports the growth of the plants. The roots of the plant form the structure of the lamp shade in which the rays break. So the plant is not only decoration, but also a component of the object." More at Miriam Aust.